cpu spikes causing crashes.

Hi everyone,

My logic pro x is crashing very very frequently at the moment with not that many tracks in the project (roughly 20) and I think the reason why is demonstrated in the picture below. But I'm not sure what this means or how to solve the issue. if someone could help that would be great. This image remains the same even if I single one audio channel in the project. I haven't done anything unusual in terms of processing yet and the synths being used at the moment are sylenth 1 and synth master which are both considered to be light on the cpu as far as I'm aware.

thanks,

Jac